Angot, Hélène; Beck, Ivo; Jokinen, Tuija; Laurila, Tiia; Quéléver, Lauriane; Schmale, Julia (2022): Ambient air ozone mole fractions measured in the Swiss container during MOSAiC 2019/2020 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.944268
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Abstract:
This dataset contains minute-averaged ozone mole fractions measured during the year-long Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition from October 2019 to September 2020. The measurements were performed in the Swiss container on the D-deck of Research Vessel Polarstern. Data were collected using a 2B Technologies instrument (model 205). The minute-averaged mole fractions were adjusted after cross-evaluation against measurements performed in the Atmospheric Radiation Measurement (ARM) Program container using a Thermo Fisher Scientific model 49i instrument. Negative spikes due to local anthropogenic pollution sources (e.g., exhaust by the vessel's engine and vents, skidoos, helicopters, on-ice diesel generators) were identified and flagged using the function “despike” from R package oce (version 1.3-0). Briefly, this function first linearly interpolates across any gaps (missing values). Then, it calculates a running median spanning k elements. The result of these two steps is the “reference” time-series. The standard deviation of the difference between values and the reference is then calculated. Values that differ from the reference by more than n times this standard deviation are considered to be spikes and eliminated. The function was applied twice with different k values (k = 1439 (1 day) and k = 61 (1 hour)) and n = 3. The data columns include the Date and Time in Coordinated Universal Time (UTC), the latitude and longitude of Research Vessel Polarstern, the MOSAiC event label, the original ozone mole fractions in nmol/mol, the adjusted ozone mole fractions in nmol/mol after cross-evaluation, and a pollution flag where 'yes' means that local pollution was detected.
Related to:
Angot, Hélène; Blomquist, Byron; Howard, Dean; Archer, Stephen; Bariteau, Ludovic; Beck, Ivo; Boyer, Matthew; Crotwell, Molly; Helmig, Detlev; Hueber, Jacques; Jacobi, Hans-Werner; Jokinen, Tuija; Kulmala, Markku; Lan, Xin; Laurila, Tiia; Madronich, Monica; Neff, Donald; Petäjä, Tuukka; Posman, Kevin; Quéléver, Lauriane; Shupe, Matthew D; Vimont, Isaac; Schmale, Julia (2022): Year-round trace gas measurements in the central Arctic during the MOSAiC expedition. Scientific Data, 9(1), 723, https://doi.org/10.1038/s41597-022-01769-6
Source:
Haas, Christian (2020): Master track of POLARSTERN cruise PS122/2 in 1 sec resolution (zipped, 36.7 MB). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.924672
Kanzow, Torsten (2020): Master track of POLARSTERN cruise PS122/3 in 1 sec resolution (zipped, 52 MB). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.924678
Rex, Markus (2020): Master track of POLARSTERN cruise PS122/1 in 1 sec resolution (zipped, 43.3 MB). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.924669
Rex, Markus (2021): Master track of POLARSTERN cruise PS122/4 in 1 sec resolution (zipped, 36 MB). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.926830
Rex, Markus (2021): Master track of POLARSTERN cruise PS122/5 in 1 sec resolution (zipped, 34 MB). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.926911
Further details:
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
Swiss National Science Foundation (SNF), grant/award no. 188478: Measurement-Based understanding of the aeRosol budget in the Arctic and its Climate Effects (MBRACE)
Coverage:
Median Latitude: 85.029980 * Median Longitude: 58.204922 * South-bound Latitude: 78.130102 * West-bound Longitude: -176.208611 * North-bound Latitude: 89.999831 * East-bound Longitude: 174.434968
Date/Time Start: 2019-10-01T00:00:00 * Date/Time End: 2020-09-30T23:59:00
Minimum Elevation: -4412.4 m * Maximum Elevation: -214.0 m
Event(s):
PS122/1_1-76 * Latitude Start: 82.063496 * Longitude Start: 119.285024 * Latitude End: 86.593190 * Longitude End: 119.241500 * Date/Time Start: 2019-09-26T20:00:00 * Date/Time End: 2019-12-13T09:04:45 * Elevation: -4187.4 m * Sensor URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ozone monitor (O3_MONITOR)
PS122/2_14-167 * Latitude: 86.593231 * Longitude: 119.237001 * Date/Time: 2019-12-13T09:11:00 * Elevation: -4401.7 m * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ozone monitor (O3_MONITOR) * Comment: Recording continued from Leg 1
PS122/3_28-35 * Latitude: 88.591064 * Longitude: 55.585638 * Date/Time: 2020-02-24T09:00:00 * Elevation: -4412.4 m * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: PS122/3 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ozone monitor (O3_MONITOR) * Comment: continue recording
Comment:
We used 1 sec time resolution positional data from the following datasets: PS122/1: Rex, M (2020), PS122/2: Haas, C (2020), PS122/3: Kanzow, T (2020), PS122/4: Rex, M (2021a), PS122/5: Rex, M (2021b)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Schmale, Julia | Geocode – UTC | ||
| 2 | LATITUDE | Latitude | Schmale, Julia | Geocode | ||
| 3 | LONGITUDE | Longitude | Schmale, Julia | Geocode | ||
| 4 | Event label | Event | Schmale, Julia | |||
| 5 | Ozone, dry-air mole fraction | O3 | nmol/mol | Schmale, Julia | Chemiluminescence O3 monitor, 2B Technologies model 205 dual-beam | |
| 6 | Ozone, dry-air mole fraction | O3 | nmol/mol | Schmale, Julia | Chemiluminescence O3 monitor, 2B Technologies model 205 dual-beam | Adjusted |
| 7 | Flag, pollution | Flag pollution | Schmale, Julia |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1444757 data points
Download Data
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